Wood-planing machine.



-F- H. CLEMENT & H. A. PERKINS.

WOOD PLANING MACHINE.

APPLICATION FILED JULY 25. 1917.

Patented J an. 28, 1919.

4 SHEETS-SHEET I.

III III- INVENTURS fizz 74/1 [66 (Kenya nt.

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ATTORNEY n1: nun: ml'lu m. rnomurua. wAaMmcraN. n. r.

F. H. CLEMENT & H. A. PERKINS.

WOOD PLANING MACHINE. APPLICATION FILED JULY 25,1917.

Patented J an. 28, 1919.

4 SHEETS-SHEET 2.

ALL

INVENTORS f'ra n/r Mflement. flzra rY Pa y/r/xs'. M/QMJV4 ATTORNEY F. H.CLEMENT 6: H. A. PERKINS.

WOOD PLANING MACHINE.

APPLICATION FILEI) mwze. 1911.

Patented Jan. 28, 1939.

4 SHEEI'S SHEET 3.

INVENTURS Frank/1i cdeweyri YA aw A.

ATTORNEY F. H. CLEMENT & H. A; PERKINS.

WOOD PLANING MACHINE.

APPLICATION FILED JULY 26.1917.

1 22,579. Patented Jan. 28, 1919.

4 SHEETS-SHEET 4.

INVENTORS Fra 71;? /r C'c we xi ATTORNEY UNITED sanans Parana canton.

FRANK H. CLEMENT AND HIRAM A. PERKINS, OF ROCHESTER, NEEV YORK,ASSIGNORS TO AMERICAN WOOD WORKING MACHINERY (10., OF ROCHESTER, NEWYORK, A

CORPORATION OF PENNSYLVANIA;

WOOD-PLANIING MACHINE.

Specification of Letters Patent.

Patented J an. 28, 1919.

Application filed July 26, 1917. Serial No. 183,003.

To all whom it may concern Be it known that we, FRANK H. CLEMENT andHIRAM A. PERKINS, citizens of the United States, residing at Rochester,in the county of Monroe and State of New York, have invented certain newand useful Improvements in Wood-Planing Machines, of which the followingis a specification.

This invention relates to that class of planing machines known as doublesurfacers, and consists in general in improved mechanism connected withthe under cutter head, by means of which the quality of surfacing isimproved, gouging and clipping of the ends prevented and the stockplaned parallel from end to end.

Furthermore, we obtain by our construction facility of adjustment of thecutter head, the chipbreaker, the pressure bar and the overbed platewhich saves time in adapting the machine to different kinds of work.

In the accompanying drawings- Figure 1 is a side elevation of thatportion of a double surface planer containing the upper and lower cutterhead, and parts coacting with them.

Fig. 2 is a sectional elevation of the same parts, showing especiallythose adjacent to and operating in connection with the lower cutterhead.

Fig. 3 is a plan view of the lower cutter head and its chipbreaker andpressure bar.

Fig. 4c is a plan view of the o-verbed support and adjusting devices forthe same.

Fig. 5 is an enlarged end elevation of the overbed plate, its supportingframe and the rear feed roll together with parts connected with them.

Fig. 6 is an enlarged cross section of the ehipbreaker and supportingbar.

Fig. 7 is an inverted plan of the lower yoke supporting frame.

Fig. 8'is an elevation of one end of the chipbreaker supporting bar.

A, Figs. 1 and 2, is the main frame of the planer. B is the verticallyadjustable bed which we have shown as being raised and lowered by meansof wedges L, Fig. 1, on either side. 0 is the upper cutter head. E. Efeed rolls, and G the under cutter head having bearings in the yoke F.This yoke slides transversely out of the machine on suitable ways. I isan intermediate bed plate receiving the stock from the rolls, E. E. M isthe lower cutter head bed plate or overbed, which holds the stock downwhile passing over the under cutter head. I). D are delivery rolls whichtake the stock away from the under cutter head, and N is the deliverybed plate secured to the main bed B in the usual manner.

The above description applies to parts which are common in doublesurfacers, and we make no claim to them as such. Our improvements areincluded in the following description H, Figs. 2, 6 and 8, is a barextending across the machine parallel with the cutter head C and securedto the detachable yoke F by screws 18. This bar carries a number of lugs6, Figs. 3 and 6, on its upper edge, between which are fittedchipbreaker sections 4. These sections are all hinged to the bar H, by arod 9, which passes through holes in the lugs 6, and throughcorresponding ears 44: of the sections 4. These sections are fittedclosely against each other on adjacent edges to prevent the entrance ofdust andchips, but are each free to respond to the passage of the lumberover them. Under each section is provided a strong spring 3,

resting upon the bar H, or in sockets provided for them, which thusoperate to lift the sections to a point where the stop lugs 5 come incontact with a rib on the bar H.

The sections 4 have a curved lip 20, Figs. 2 and 6, to guide the, chipsfrom the cutter head C down to the chute L. On the back of this lip is astop 10, which limits the downward movement of the section and preventsits operating end 48 from coming in contact with the knives in thecutter head C. The screws 18 pass through slots in the bar H, and setscrews 45, Figs. 6 and 8, are applied to the bar at each end, whichpermit a Vertical adjustment of the same and a consequent alinement ofthe working face 48 of the sections with the cutter head C.

It will be noted that the sections of the chipbreaker are pivoted at apoint forwardly of the cutter head and below the working surface of theintermediate bed plate I, so that they incline upwardly toward thecutter the machine.

J is the bar behind the out, and this also is hinged on a rod 21 whichis secured in lugs 46 on the yoke F, and has two or more springs underit by which it is forced upward until the stops 22 strike the side ofthe yoke F: the stops 23 prevent the bar from being depressed too far.

D is the lower delivery roll, preferably located close to the bar J;Springs 17 are placed under the boxes 24: of the feed roll shaft, andhollow jack screws 15 threaded into lugs 25 on the bed B, support thesprings and the roll boxes which are free to move vertically, Bolts 16pass through the hollow jack screws, and are threaded into the boxes 24:by this means the boxes may be adjusted and the tension of the springsvaried as required. The roll D is adjusted by the screws 16, slightlyabove the delivery bed N, whereby the lumber receives the pressure ofthe springs 17 and is pressed against the upper roll D.

R is a frame supporting the yoke F, and made vertically adjustable inthe main frame A by means of screws 32 which are located at oppositeends of the frame R and are operated simultaneously by a cross shaft 36and gearing 37 attached. Thus, the yoke F with the cutter head C andattached parts, can be adjusted to the cut or dropped down to take nocut, independently of the main bed B. The frame R is fitted closely intoa recess in the sides of the bed B, and carries within it the chip chuteL. Nays 12 are provided on the upper face of the frame, beveled so as tolock into corresponding ways on yoke F. A projecting flange 11, Fig. 2,

. on this yoke comes in contact with the wall of the bed B, and theframe R is cleared as shown at 34: from the said wall, but has sidebearings at 47 in the recess of the bed B.

For the purpose of clamping up the yoke F and frame R rigidly to the bedB, we provide bolts 33 passing through the frame R and that part of thebed B outside of the frame B, said bolts being threaded into the bed at35: thus, when these bolts are tightened up they operate to clamp theyoke F against the bed at the point 11, and at the same time drc w itdownward to its seat by the wedging action of the beveled ways 12. Bythis means the yoke F, cutter head C and the attached parts are clampedrigidly to the bed B, which is necessary to the production of good work,and at the same time the frame R is clamped with them at points 47.

The overbed plate M is attached in any suitable manner to a supportingframe S, extending across the machine frame and clamped thereto byscrews 31 of which there are preferably four as indicated in Fig. 4%. Wehave shown these clamp screws as connected together in pairs by crossshafts 39 and suitable worm gearing 30, by which the clamping can bequickly done by the operator through hand wheels 40. For the pur pose ofadjusting the overbed plate M to the surface of the stock coming from thtop cutter head 0, we provide wedges P fitted under suitable bearingflanges on the frame S and resting on the top of the machine frame A.These wedges are adjustable longitudinally by means of screws 27 whichare operated synchronously by a cross shaft 42 and two pairs of gears29. A hand wheel on shaft 42 is located conveniently to the operator.The clamping screws 31 pass either through slots in the wedges P, orslightly to one side.

By the use of the wedge adjusting screws 27 and gearing 29, we areenabled to make a; micrometric adjustment of the frame S and overbedplate M, whereby the bed plate and its attachments can be nicelyadjusted to the lumber passing over the plate I, with upper sidesurfaced.

Instead of supporting the upper delivery roll D upon the frame of themachine as is common, we provide boxes 26, Figs. 2, 4L and 5,.which arefitted to move freely in vertical recesses in the frame A, but areattached to and move with the supporting frame S. One method of suchattachment is shown, consisting of hollow jack screws 13 which arethreaded into bosses on the frame S and press against the boxes 26 orprojecting bosses thereon. Clamping screws 14: pass through the ackscrews, and are threaded into the boxes 26. It will be seen that whenthe clamp screws 14 are drawn tightly against the jack screws, the boxesare held rangement and adjustment is apparent when 7 i we consider thatthe upper cutter head G. varies the line of its cutting, by reason ofthe knives becoming dull, or changed in position by resetting, orshortened by jointing to produce even action; it then is necessary toadjust the overbed plate M to accommodate the line of cut so as toproduce a constant pressure on the lumber and not spring or bend it inits passage through the"planer. To accommodate this satisfactorily andpreserve the accurate alinement of the plank according'to its uppersurface, the feed roll D must necessarily be controlled by .the overbedplate and adjusted to it.

The operation of our invention is similar to that of the ordinary typeof double surfacing planers, except that by reason of our improvementsthe pants and adjustments de scribed are more eflicient, the quality ofthe work greatly improved and the quantity increased. We have not deemedit necessary to mention the special form of cutter head shown, nor thenovel arrangement of the jointer slide T, Fig. 2, each of which is thesubject of a former patent issued to these applicants.

By the use of the sectional chipbreaker in connection with a lowercutter head, we are enabled to insure the contact of narrow strips withthe overbed plate at all times, no matter how roughly they may be sawednor how thin they are, thus producing smooth parallel work on stock thatcould not heretofore be surfaced on both sides.

What we claim as our invention and desire to secure by Letters Patentis:

1. In a. double surface planer, the combi nation of a frame, an uppercutter head sup ported thereon, an under cutter head ad justablysupported in said frame, an overbed for said under cutter head, avertically adjustable supporting frame in which said overbed issupported, an upper feed roll adjustable on said frame, and means foradjusting said frame to properly aline said overbed and feed roll withthe cut of the upper cutter head.

2. In a double surface planer, the combination of a frame, an uppercutter head supported thereon, an under cutter hea d adjustablysupported in said frame, an overbed for said under cutter head, avertically adjustable supporting frame in which said overbed issupported, an upper feed roll, bearings therefor movable in said frame,means for adjustably securing said bearings to said overbed supportingframe, and means for adjusting the latter to properly aline said overbedand feed roll with the cut of the upper cutter head.

3. In a double surface planer, the combination of a frame, an uppercutter head supported thereon, an under cutter head a djustablysupported in said frame, an overbed for said under cutter head, avertically adjustable supporting frame in which said overbed issupported, an upper feed roll sccured to said frame, inclined bearingflanges on opposite sides of said frame, wedges cooperating with saidflanges for adjusting said frame vertically to properly aline theoverbed and feed roll with the cut of the upper cutter head, means formoving said wedges synchronously, and means for clamping said frame inadjusted position.

4. In a double surface planer, the combination of a main frame, an uppercutter head revolubly supported therein, a vertically adjustable framehaving transversely extending guideways supported in said main frame, ayoke slidably mounted in said guideways, a lower cutter head revolublymounted in said yoke, a lower feed roller mounted in said verticallyadjustable frame,

means for adjusting the opposite sides of said frame synchronously, andmeans for clamping said frame in the main frame and the yoke to saidframe.

5. In a double surface planer, the combination of a main frame, an uppercutter head revolubly supported thereon, a vertically adjustable yokesupporting frame mounted therein, a yoke slidably mounted on said frame,interlocking guideways on the yoke and the frame, a single means forclamping the yoke to its supporting frame and the supporting frame inthe main frame, and an under cutter head revolubly supported in theyoke.

6. In a double surface planer, the combination of a frame, an uppercutter head revolubly mounted therein, a bearing yoke adjustablysupported in said frame, an under cutter head mounted in said bearingyoke, a chipbreaker comprising a. plurality of sections pivotallysupported on said yoke, means for resiliently pressing said sectionsinto contact with the work piece, means for limiting the reciprocatorymovements of said sections, and means for adjusting said yoke to thework piece.

7. In a double surface planer, the combination of a frame, an uppercutter head revolubly mounted therein, a bearing yoke adjustablysupported in said frame, an under cutter head mounted in said bearingyoke, a chipbreaker comprising a plurality of sections, a bar adjustablymounted on said yoke on which said sections are pivotally supported, achip deflecting lip on each section, resilient means for pressing saidsections into contact with the work and means for adjusting said yoke tothe work piece.

8. In a double surface planer, the combination of a frame, an uppercutter head revolubly mounted therein, an under cutter head, achipbreaker comprising a plurality of independently movable section'sadjacent said under cutter head, yieldable means for pressing each ofsaid sections into the path of the work piece, and an adjustable bar onwhich said sections are mounted to move about a common pivotal axis.

9. In a double surface planer, the combination of a frame, an uppercutter head supported therein, a yoke adjustably supported in saidframe, an under cutter head revolubly supported in said yoke, achipbreaker pivotally supported on said yoke in front of the cut, a barbehind the out also pivotally supported on said yoke, and means for adjusting said yoke to the work piece.

FRANK H. CLEMENT. HIRAM A. PERKINS. Witnesses:

A. D. BAGG, JULrUs H. Bnoon.

Copies of this patent may be obtained for five cents each, by addressingthe "Commissioner of Patents, Washington, D. 0.

